Role of isospin composition in low-energy nuclear fusion

Gumbel, Richard; Ross, Christian; Umar, A. S.

doi:10.1103/physrevc.108.l051602

Role of isospin composition in low-energy nuclear fusion

Journal Article · Tue Nov 14 00:00:00 EST 2023 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.108.l051602· OSTI ID:2208735

Gumbel, Richard ^[1]; Ross, Christian ^[2]; ^[2]

Fisk University, Nashville, TN (United States); Michigan State University, East Lansing, MI (United States); Vanderbilt University
Vanderbilt University, Nashville, TN (United States)

We employ a microscopic approach that examines the impact of isospin dynamics on the process of low- energy nuclear fusion along an isotope chain and dependence on deformation. Our method utilizes the density constrained time-dependent Hartree-Fock theory (DC-TDHF), where isoscalar and isovector characteristics of the energy density functional (EDF) are examined in turn. This approach is applied to a series of fusion interactions of ¹⁷⁶Yb with increasingly neutron rich isotopes of calcium. By evaluating the contributions from the isoscalar and isovector components of the EDF, we look to quantify the influence of isospin composition on the conditions under which fusion is most likely to take place. Furthermore, our findings reveal that, in nonsymmetric systems, the isovector dynamics plays a significant role. Its typical effect is a reduction in the potential barrier, which turns into enhancement for neutron-rich systems.

View Accepted Manuscript (DOE)

Research Organization:: Vanderbilt University, Nashville, TN (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: SC0013847

OSTI ID:: 2208735

Alternate ID(s):: OSTI ID: 2205685

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 5 Vol. 108; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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